Tube-cutter



(No Model.)

J. MILLER. TUBE CUTTER.

No. 605,257., Patented June 7,1898.

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m: mums PETERS no. um-ammo" WASHINGTON, n. c.

Nrrnn STATES JEREMIAH MILLER, OF CLEVELAND, OHIO.

TUBE-CUTTER.

SPECIFICATION forming part of Letters Patent No. 605,257, dated June '7,1898 Application filed Mareh'Bl, 1897. Serial N0. 630,069. (No model.)

To all whom it may concern.-

Be it known that I, JEREMIAH MILLER, a citizen of the United States,residing at Oleveland, in the county of Ouyahoga and State of Ohio, haveinvented certain new and useful Improvements in Tube-Cutters; and I dohereby declare the followin g to be a full, clear, and exactdescriptionof the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in tube-cutters; and it consists inthe novel construction, arrangement, and combination of parts for thepurpose of simplifying the construction and improving the efficiency ofthe apparatus.

In the drawings, Figure 1 is a side view of the apparatus complete. Fig.2 is an end view in elevation of the apparatus with the wedge or mandrelremoved. Fig. 3 is a side view of the body or shell. Fig. 4: is a detailshowing in front and side view thecase or cage for the preferred form ofcutter. Fig. 5 is a side and end view of the rotary cutter. Fig. 6 is afront view, and Fig. 7 an end view, of a modified form of cutter.

A represents the cylindrical or slightly-tapered shell, loosely fittingthe tube and having an elongated cylindrical neck a, which may or maynot be provided with one or more flat faces a and is longitudinallypierced by a channel a preferably cylindrical, into which open a numberof radially-disposed angular channels a formed in the solid barrelintermediate of its length and extending from the channel a totheexterior of the shell, as best seen in Fig. 2. I have shown threesuch radial channels and regard three as the preferable number; butobviously two, four, or morecould be used, although with less certaintyof an equal bearing and action of all the cutters than where three areemployed. In these radial channels or dieways a are seated cutting-diesB, Figs. 6 and 7, or the die-carryingcages G, Fig. 4:, in which areseated the rotary dies or cutters D, which I prefer to the dies B. Thecages O fit the channels a and are formed with a bearing a, in which theshaft (1 of the cutter D seats. The cutter D has the hardened cuttingedge d and a-cylindricalshort shaft (1 which is stepped down at itsextremities, as shown in Fig. 5, forming a seat for springs E, whichjsurroundthe shell A, seating in grooves a therein, and bear on theshafts of the cutters D, thus at thesame time retaining the cutters intheir seats in the cages O and pressing the cages and cutters toward thecenter of the shell.

To force outward the cutters and cut the tube, a tapering wedge 0rmandrel F, preferably having the same number of fiat faces f as thereare cutters, is inserted into the central channel a between the cages Oand driven in until the cutters bite into the inner surface of the tubeto be cut, when the wedgeF is turned byawrench or other suitable meansapplied to the square or angular partf at its outer end and may besupplemented by a wrench applied to the neck a. With three cutters, asshown, one-third of a turn makes to bite deeper, and another turn made,thus speedily cutting through the tube. The dies B operate in a similarmanner; but they may also be used after the manner of a shear or chiselby driving in the wedge F until the dies B cut through the tube, thenwithdrawing the wedge, and turning the shell and cutters part way aroundand again driving in the wedge. With three dies the third driving of thewedge will cut the tube completely off. The cutters B have their body I)fitting the channel a and have shoulders 19*, on which the springs Fseat, the cutting edge b being preferably inclined, as shown; but it maybe otherwise 7 shaped-for instance, pointed, as shown in dotted linesinFig. 17. Both the cutters B and the cages -O are slightly tapered, asshown, to correspond with the taper of the wedge, and by reason of theirwidth afford a perfectly solid bearing. for the'wedge, so that when thewedge is in place'the whole apparatus is as rigid as a single piece.

For use in cutting off boiler-fines, &c., a gage G is provided, whichfits upon the neck a, and turns freely thereon, having arms 9,

which project from the expanded portions 9 and bear againsttheboiler-face. A collar H also fits on the neck a and is secured at theproper pointthereon by a set-screw h, threaded through the collar, asseen in Fig. 1. In setting the cutter the set-screwis loosened,

and the arms g being placed against the boiler- -face the shell A ispushed in until the cut- The springs E are flat rings cut through at onepoint, as seen in Fig. 1, and are sprung on over the shell. When the cutis finished, the Wedge is withdrawn. and the springs retract thecutters, when the instrument can be removed. The neck a may beconsiderably longer than shown, and the fiat faces a may be used alonefor rotating the tool, if preferred. 4

What I claim as my invention, and desire to secure by Letter Patent,isv 1. A tube-cutter comprising in combination a tubular body having areduced neck and a number of radiating channels extending through thebody intermediate of its length, cutters seated in said channels andhaving radial movement therein, springs pressing said cutters inward, agage revolubly fitting on the neck, a sliding collar fitting on the neckand having a binding-screw, and a tapering wedge having peripheral fiatfaces engaging and actuating each of the cutters and adapted to beturned to rotate the apparatus, substantially as described.

2. In a tube-cutter the combination of a tubular body having a neck ofless diameter with external flat faces, and having intermediate radialchannels extending through the body-wall, cutters fitting said channelsand movable radially therein, annular flat springs seated in grooves onthe cutter-bod y and pressing the cutters inward, a gage revolublyfitting on said neck, a sliding collar fitting on said neck and having abinding-screw, and a tapering Wedge having peripheral fiat facesengaging the cutters and adapted to be turned to rotate the apparatus,substantially as described.

' 3. In a tube-cutter the combination of a tubular body having a neck ofless diameter with external flat faces, and having intermediate radialchannels extending through the body-Wall, cutters fitting said channelsand and having a binding-screw, and a tapering wedge having peripheralflat faces engaging the cutters and adapted to be turned to rotate theapparatus, substantially as described.

4. A tube-cutter comprising in combination a tubular body having a neckof less diameter, a number of radiating channels extending through thesolid body-wall intermediate of its length, cutter-cages fitting saidchannels and movable radially therein, rotary cutters journaled in saidcages, springs seated ingrooves on the cutter-body and pressing saidcutters inward, a gage revolubly fitting on said neck, a sliding collarfitting on said neck and having a binding-screw,and a tapering Wedgehaving peripheral fiat faces engaging the cutter-cages and adapted to beturned to rotate the apparatus, substantially as described.

5. In a tube-cutter the combination of a tubular body or barreltransversely grooved externally and having intermediate radial channelsextending through its body-wall, cutters fitting said channels andmovable radially therein, said cutters having external shoulders andflat axially-inclined inner faces, fiat annular springs seated in thegrooves on said barrel and bearing on the shoulders of the cutters, andatapering Wedge having flat peripheral faces engaging-each of thecutters and adapted to be turned to rotate the apparatus in the tube,substantially as described.

6. In a tube-cutter the combination of a I tubular body or barreltransversely grooved externally and having intermediate radial channelsextending through its body-wall, f cutters having external shoulders andan in- 1 termediate cutting edge and flat axially-inf clined innerfaces, fiat annular springs seated in the grooves on said barrel andbearing on g the shoulders of the cutters, a revoluble gage and aclamping-collar fitting on the barrel, and a tapering wedge having flatperipheral faces engaging each of the cutters and adapted to be turnedto rotate the apparatus in the j tube, substantially as described.

In testimony whereof I hereto affix my'sigtoo 5 nature in presence oftwo witnesses. movable radially therein, annular fiat springs 5 seatedin grooves on the cutter-body and pressing the cutters inward, a gagerevolubly fitting on said neck and having forWard-extendj ing arms, asliding collar fitting on said neck JEREMIAH MILLER.

Witnesses:

W. E. MORROW, M. A. MORROW.

